Popcorn can be a healthy, nutritious addition to a keto diet, especially if you limit other high-carb foods. Popcorn is a snack made from dried corn kernels that are heated to produce edible puffs.

Popcorn is a delicious whole-grain, high-fiber snack. It’s full of healthful antioxidants called polyphenols, which might reduce the risk of heart disease and some cancers. But when you go to the ...